Danish Trial of Beta Blocker Treatment After Myocardial Infarction Without Reduced Ejection Fraction

Acute Myocardial Infarction Clinical Trial

— DANBLOCK  

Official title:

Danish Trial of Beta Blocker Treatment After Myocardial Infarction Without Reduced Ejection Fraction (DANBLOCK)

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT03778554
• Other study ID #: 2018-002699-42
• Secondary ID: 2018-002699-42
• Status: Recruiting
• Phase: Phase 4
• Start date: December 17, 2018
• Est. completion date: December 10, 2024

Study information

• Verified date: December 2023
• Source: Bispebjerg Hospital
• Contact: Eva IB Prescott, MD, DMsC
• Phone: 40262134
• Email: Eva.Irene.Bossano.Prescott[@]regionh.dk
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To determine whether long-term treatment with oral betablocker therapy after myocardial infarction in patient with no heart failure reduces the composite outcome of recurrent MI, all-cause mortality, revascularisation with percutaneous coronary intervention or coronary artery bypass graft, ischemic stroke, incident heart failure, malignant ventricular arrhythmia or resuscitated cardiac arrest.

Description:

Aim: To determine whether long-term treatment with oral betablocker (BB) therapy after myocardial infarction (MI) in patient with no heart failure reduces the composite outcome of recurrent MI, all-cause mortality, revascularisation with percutaneous coronary intervention or coronary artery bypass graft, ischemic stroke, incident heart failure, malignant ventricular arrhythmia or resuscitated cardiac arrest.

The inclusion- and event rate in DANBLOCK have been continuously assessed since the first patient was randomized in December 2018. The inclusion- and event rate have been lower than expected, in part due to COVID-19. To enhance feasibility, the decision was made by the Steering Committees to combine the data from DANBLOCK with the data from the Norwegian BETAMI (NCT03646357) and publish main results together.

The trials have similar designs, only minor differences in study entry criteria, and were, from the very beginning, coordinated with the aim of conducting sub-studies on pooled data. The primary endpoint has been harmonized without knowledge of the distribution of events. BETAMI and DANBLOCK will remain separate trials until the end of follow-up, where data from the trials will be combined and main results published together.

Intervention: BB therapy versus no therapy.

Main Inclusion Criteria: Patient that have suffered a MI, both Non-ST elevation MI and ST elevation MI and can be randomized within 14 days of MI with no signs of heart failure and a left ventricular ejection fraction>40%.

Main Exclusion Criteria: Any indication or contraindication for BB treatment other than secondary prevention according to the treating cardiologist

Primary study endpoint:

• The composite of all-cause mortality, recurrent MI, revascularisation with PCI or CABG, ischemic stroke, incident heart failure, malignant ventricular arrhythmia or resuscitated cardiac arrest.

Key secondary endpoints to be included in the main publication:

• Each of the components of the primary endpoint, i.e.: All-cause mortality, recurrent MI, revascularisation with PCI or CABG, ischemic stroke, incident heart failure, malignant ventricular arrhythmia, or resuscitated cardiac arrest.

• To assess clinical outcomes linked to beta-blocker therapy in the following subgroups:

age (tertiles), gender (men vs. women), beta-blocker dosage tertiles (dosage at randomization, STEMI vs. NSTEMI, and LVEF subgroups (preserved vs. mid-range). Other secondary endpoints are described in the Statistical Analysis Plan and under "Outcome Measures".

Other secondary objectives are:

• To study whether oral beta-blocker therapy reduces the risk of cardiovascular death compared to no such therapy

• To study whether oral beta-blocker therapy reduces the risk of stable and unstable angina compared to no such therapy

• To study whether oral beta-blocker therapy reduces the risk of atrial fibrillation, atrial flutter or other atrial tachyarrhythmias compared to no such therapy

• To study whether oral beta-blocker therapy increases the risk of hospitalization for bradycardia, syncope, implantation of pacemaker

• To study whether oral beta-blocker therapy increases the risk of hospitalization for chronic obstructive pulmonary disease, asthma or peripheral artery disease.

• To study whether oral beta-blocker therapy increases the risk of hospitalization or outpatient visit for new-onset or dysregulated diabetes

• To study whether oral beta-blocker therapy affects the following patient related outcomes: Quality of life, angina, dyspnoea, anxiety, depression, sexual dysfunction or sleep disorders.

• To conduct cost-utility analysis in relation to quality of life and a health economic evaluation including drug use, health care utilization, employment, income, and benefit take-up

• To describe beta-blocker dosage and adherence

• To assess study safety

Safety endpoints:

The following safety endpoints will be reported in the main publication:

• Primary safety endpoint: A composite of all-cause mortality, recurrent MI, incident HF, malignant ventricular arrhythmia or resuscitated cardiac arrest at 30 days following randomization

• Other safety endpoint: All-Cause Mortality: A table of all deaths within the follow-up period

• Other safety endpoint: Suspected Unexpected Serious Adverse Reaction (SUSARs): A table of all SUSARs within the follow-up period with number and frequency in each group. Reported by local investigators and obtained from the study databases.

All serious adverse events, including potential endpoints, are captured in the study database to be used for safety assessments and are reported continuously to regulatory authorities.

Sample Size: A total of approximately 2760 patients will be recruited and randomized 1:1 to BB treatment (type and dosage according to treating physician) or no BB treatment. Treatment must be initiated within 14 days of MI.

Sample size considerations: The study is event driven and a power calculation for the combined DANBLOCK-BETAMI trial has been performed in which 950 events will provide a power of 80% to detect a true treatment effect equal to a hazard ratio of 1.2 for no beta-blocker therapy.

Location: All departments of cardiology in Denmark are invited to participate. All patients admitted to hospital for MI will be screened for in- and exclusion criteria and contacted if eligible.

Treatment Duration: Estimated (non) treatment duration of a minimum of 6 months and a maximum of 6 years (anticipated).

Follow-up: Patients will be followed from the randomization date until end of follow-up.

Intervention and dosage of BB treatment: The intervention will be active treatment with BB, type and dosage according to treating cardiologist choice and control will be standard care (without BB treatment). The treating cardiologist is recommended to use the highest dose deemed tolerable for the patient at the time of randomization. Dosage, adherence and cross-over will be monitored through linkage to the Danish Register of Medical Product Statistics.

Sample size considerations: Assuming a hazard ratio of 1.2 for the non-treated group compared to the treated the DANBLOCK trial has 80% power to detect this effect with an accumulation of 900 events of the primary endpoint. With approximately 3570 patients randomized the investigators expect to reach 900 events within the study period.

Statistical Analysis: Please see the Statistical Analysis Plan.

Data Safety Monitoring Board (DSMB): This committee consisting of two senior cardiologists and one trial-science statistician will overview safety and will have access to unblinded data. They will formally review the accumulating data every 6 months throughout the study period to ensure there is no avoidable increased harm to patients. The DSMB may recommend trial termination due to excess risk associated with no treatment with BB.

Recruitment: All patients admitted to hospital for MI will be screened for in- and exclusion criteria and contacted if eligible. Logistics of identifying and contacting the patients will be organized locally; some hospitals will randomize patients before discharge, others will contact patients after discharge. Patients will be randomized 1:1.

Publication policy: On study completion the results will be submitted for publication in an international medical journal. The results of this study will also be submitted to the Competent Authority and the Ethics Committee according to EU and Danish regulations.

Furthermore, a joint analysis of the data from BETAMI-DANBLOCK with the REDUCE (NCT03278509) and REBOOT (NCT03596385) trials will be performed.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 2760
• Est. completion date: December 10, 2024
• Est. primary completion date: December 10, 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Left ventricular ejection fraction > 40%

• Myocardial infarction (MI) within previous two weeks

The diagnosis of acute MI must meet the Universal European Society of Cardiology (ESC) definition of MI

Exclusion Criteria:

• Clinical evidence of heart failure at the time of discharge

• Pregnancy or of child bearing age not using safe anticonception throughout the study period

• Lack of signed informed consent and expected cooperation during follow-up

• Any medical condition where beta blocker treatment is indicated according to the treating physician

Related Conditions & MeSH terms

• Acute Myocardial Infarction
• Infarction
• Myocardial Infarction
• Non-ST Elevated Myocardial Infarction
• Non-ST Elevation Myocardial Infarction (nSTEMI)
• ST Elevation Myocardial Infarction

Intervention

Drug:
• Metoprolol Succinate
Eligible patients randomized to receive long-term therapy with oral beta-blockade
• Bisoprolol
Eligible patients randomized to receive long-term therapy with oral beta-blockade
• Carvedilol
Eligible patients randomized to receive long-term therapy with oral beta-blockade
• Nebivolol
Eligible patients randomized to receive long-term therapy with oral beta-blockade

Locations

Country	Name	City	State
Denmark	Bispebjerg Hospital, Dept. of Cardiology Y builing 67, 1.floor, Bispebjerg Bakke 23	Copenhagen

Sponsors (26)

Lead Sponsor

Collaborator

Bispebjerg Hospital

Aalborg University Hospital, Aarhus Universitetshospital, Amager Hospital, Bispebjerg Frederiksberg Hospital, Bornholm Hospital, Gentofte Hospital, Glostrup University Hospital, Copenhagen, Herlev Hospital, Holbaek Hospital, Hospital of Southern Jutland, Hospitalsenheden Midt, Hospitalsenheden Vest, Hvidovre University Hospital, Naestved Hospital, Nordsjaelland Hospital, Nordsjaellands Hospital, Nykoebing Hospital, Odense University Hospital, Regionshospitalet Horsens, Silkeborg Sygehus, Slagelse Hospital, Svendborg Hospital, Sydvestjysk Sygehus, Sygehus Lillebaelt (Vejle and Kolding), Zealand University Hospital

Country where clinical trial is conducted

Denmark, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	A composite of all-cause mortality, recurrent MI, revascularisation with PCI or CABG, ischemic stroke, incident heart failure, malignant ventricular arrhythmia, or resuscitated cardiac arrest.	Time to the composite of all-cause mortality, recurrent MI, revascularisation with PCI or CABG, ischemic stroke, incident heart failure, malignant ventricular arrhythmia, or resuscitated cardiac arrest on an intention to treat analysis. The composite outcome will be assessed through nationwide registries and adjudicated by an independent Clinical Endpoint Adjudication Committee.	Estimated follow-up min 6 months - max 6 years
Secondary	Recurrent myocardial infarction	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	All-cause mortality	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Malignant ventricular arrhythmias	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Incident heart failure (diagnosed at hospitalization or at out-patient visits)	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Unplanned coronary revascularization	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Ischemic stroke	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Resuscitated cardiac arrest	Key secondary endpoint. Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Cardiovascular mortality	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Hospitalization for stable and unstable angina pectoris	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Hospitalization for atrial fibrillation, atrial flutter or other atrial tachyarrhythmias	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Hospitalization for bradycardia, syncope, or need for pacemaker	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Hospitalization for asthma and chronic obstructive pulmonary disease symptoms	Assessed through nationwide registries.	Estimated maximal follow-up 6 months - 6 years
Secondary	Hospitalization or outpatient visit for peripheral artery disease	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Hospitalization or outpatient visit for new-onset or dysregulated diabetes	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Angina symptoms	Canadian Cardiovascular Society (CCS) grading of angina pectoris.	E-questionnaires will be administered at inclusion, 3, 12 and 24 months
Secondary	Exercise capacity	Data on exercise capacity (VO2peak) will measured before and after rehabilitation and recorded in the Danish Cardiac Rehabilitation database.	At the beginning of cardiac rehabilitation (within approximately 4 weeks after randomization) and at the end of cardiac rehabilitation (approximately 6-12 weeks after beginning of rehabilitation)
Secondary	Blood pressure control	Data on blood pressure (systolic and diastolic) will measured before and after cardiac rehabilitation and recorded in the Danish Cardiac Rehabilitation database	At the beginning of cardiac rehabilitation (within approximately 4 weeks after randomization) and at the end of cardiac rehabilitation (approximately 6-12 weeks after beginning of rehabilitation)
Secondary	Quality of life measure	EQ5D (a measure of health-related quality of life that can be used in a wide range of health conditions and treatments)	E-questionnaires will be administered at inclusion, 3, 12 and 24 months
Secondary	Measures of depression and anxiety	HADS (Hospital Anxiety and Depression Scale)	E-questionnaires will be administered at inclusion, 3, 12 and 24 months
Secondary	Measures of sexual dysfunction	The International Index of Erectile Function (IIEF) and Female Sexual Function Index (FSFI)	E-questionnaires will be administered at inclusion, 3, 12 and 24 months
Secondary	Measures of sleeping disorder	Bergen insomnia Scale	E-questionnaires will be administered at inclusion, 3, 12 and 24 months
Secondary	Adherence to the prescribed dosage of beta-blocker	Assessed through nationwide registries.	Estimated follow-up min 6 months - max 6 years
Secondary	Cost-utility analysis in relation to quality of life and a health economic evaluation including drug use, health care utilization, employment, income, and benefit take-up	Assessed through nationwide registries and study database	Estimated follow-up min 6 months - max 6 years